Granted Patent
Utility
US 4,706,089 · App. 06/842,951
Synthetic aperture radar focusing
Inventor:
Frederik Weindling
Patented Case
View Patent ↗
Granted: Nov 10, 1987
Filed: Mar 24, 1986
Inventor
Frederik Weindling
Assignee (at issue)
UNITED TECHNOLOGIES CORPORATION
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.